![]() "Wiring", "Processing", "Arduino", "Wiring Pi" are all related by inspiring each other some how, despite using different languages, Java, C++, C. Or at least be aware of potential problems. Then we would have more chance of knowing what is current and what is likely to work. I wish people writing such blogs, tutorials, random examples would put a date of publication on everything, together with operating system and version, version numbers of all software component used. For many reasons:ġ) The software they used has been updated and we have newer.Ģ) The operating system they use has been updated.ģ) The operating system they used is different from ours.Ĥ) Some other library or program their example depends on has been updated or is different from what we have.ĥ) Some communications protocol they use has changed since the article was written.Ħ) The solution in the article we find is just wrong anyway. So often we find program examples, installation / configuration instructions etc do not work for us. Rule 1 of searching for any programming/technical information on the net is to always assume that whatever you find is wrong. Looks like many of the tutorials that I found are out of date! Otherwise I have written my own Qt code to access GPIO directly using these examples as a basis: Oh, actually, if you use the pigpio daemon on the Pi you can have your Qt application talk to GPIO and such though it whilst running on the PC. Working this way saves all the hassle of having to use cross-compilers on the PC and then moving binary executables around. ![]() I use github and bitbucket but one can use ones own local git repository on any machine. Push the code to a git repository from the PC, clone/pull it to the Pi. To move code from PC to Pi and back again I use git. Better still use those stubs to simulate the GPIO and such, this makes a lot of testing possible on the PC itself and one can make repeatable tests, which is a good thing. That's OK just create some stub classes/functions to fill in for those. ![]() Of course one cannot use Pi GPIO and other Pi specific features whilst developing on the PC. I don't bother using qtcreator on the Pi, any editor will do, and qmake/make.ĥ) For further development, go back to the PC and work on it in the luxury of its performance and facilities. I use Linux but I'm sure it goes the same on Windows and Mac.Ģ) Of course one can build, run, test your application on the PC as usual.ģ) When the application is in good shape, or a good chunk of it, move the source code to a Pi and rebuild it there using qmake and makeĤ) Do some testing on the Pi. My approach to creating Qt application for the Pi has been as follows:ġ) Write the application on a PC using qtcreator. Thank you all and I look forward to reviewing your feedback. Are there any ways that I can bypass the OS (or a portion of the OS) such that as soon as the Pi 3 boots up, the Qt application runs? I do not want the user of my application need to login into the OS before my app starts. I have minor experience working with SOM chips.Ģa) With the Pi 3 running Linux, would I be programming with the Linux Kernel itself instead of working directly with the registers?Ģb)If I do need to work with the registers directly, I can I reference them in my source code?ģ) Bonus Question: I would like my application to be the only application running on the Pi 3. Do they apply today or are updated tutorials available?Ģ) How can I program the GPIO pins and peripherals of the PI 3 in Qt creator? I come from the microcontroller land and usually, I would reference the registers directly. 5acf2a078cġc) Again, some of these tutorials are more then 2 years old. I will be referencing these tutorials when building my application on the. In 2019, does this still apply?ġb) Is it still best to develop on a desktop and then export the project as a cross compiled application? Or does Qt5 exist for the Pi? ![]() I could develop on the Pi itself but compiling time would be longer and I am limited to Qt4.ġa)That last statement was from websites dated 2+ years ago. I do have some questions regarding developing on the Raspberry Pi 3 that I am hoping the community can answerġ) Looking at a number of tutorials, it seems that it is best to build my application on a Desktop computer and then cross-compile the application for Raspberry Pi. ![]() The program will also need to interface to some of the GPIO pins and peripherals and interface to a touch screen device. However, I am looking to work on a project where I need to create a GUI program that runs on the Raspberry pi 3. I have experience using Linux (specifically Ubuntu), C/C++, and Qt. ![]()
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